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１９９３、１９９４年秋，通过对１９８９年秋在围场县育汰和乡双峰山村所造的６６．７ｈｍ￣２华北落叶松无性苗试验林生长情况的调查分析，初步得出华北落叶松１．５ａ生移植无性苗造林４、５年后，在树高、新梢长和胸径方面与２ａ生母树林实生苗无明显差异；在基径方面，无性苗极显著低于实生苗的初步结论。
In the autumn of 1993 and 1994, through the investigation and analysis of the growth of 66.7hm ~ 2 Larix principis-rupprechtii plantation test-beds in the autumn of 1989 in Shuimongshan Village, There was no significant difference in root height, shoot length and breast diameter of 2a seedlings after 4- and 5-year transplanting of asexual seedlings. In terms of basal diameter, the number of asexual seedlings was significantly lower than that of seedlings.